Second point. Even if medical science is wrong and she was actually dead, how does she know the guy opposite her husband was Jesus? It could've been Muhammad, Thor, Baphomet or some other undiscovered deity.
Because her mind would have shown Jesus looking exactly like how she has been conditioned to think Jesus looks. A Muslim would see Muhammed, a Buddhist would see a typical image of Buddha and so on.
The mind is an incredible echo chamber of confirmation bias.